DeinonychusAcrocanthosaurus
Eolambia
Tennontosaurus nodosaurids
nodosaurids
nodosauridteeth
neoceratopsian teeth
tiny pleurocoelidbrachiosaurid teeth
Abydosauruspleurocoelidbrachiosaurids
newsauropods
Pachycephalosaurid teeth
tyrannosauridteeth
Utahraptor CedarosaurusPlanicoxa Dakotadon ?
&
Gastonia
new hypsilophodontid
new titanosaurid
troodontid teeth
new troodontid
100
75
65
125
150
175
200
250
225
CR
ETA
CEO
US
MIL
LIO
NS
OF
YE
AR
S A
GO
JUR
AS
SIC
TRIA
SS
IC
centralUtah
MORRISON FORMATION
Mussentuchit Member
Yellow CatMember
Ruby RanchMember
Buck
horn
Co
nglo
mer
ate
Poison Strip Sandstone
CEDA
R M
OUNT
AIN
?FO
RMAT
ION
easternUtah
Albian
Campanian
Aptian
Uppe
r
Isolation of NorthAmerica resulting in local extinctionsand increased endemism
Widely-knownJurassic dino-saur faunas
Non-dinosaurian tracks
First North American dinosaurs
Dinosaurswith Europeanaffinities
New lowestCretaceous faunal level
Many horizonswith dinosaurtracks
Local extinction of sauropods
First centrosaurines& hadrosaurids
Diverse tooth fauna
Highest diversity NorthAmerica ceratopsid & hadrosaurid fauna
Southern & fauna
Tyrannosaurus Alamosaurus
First ceratopsomorphs
hiatus
hiatus
hiatus
Asian immigration induced extinctionand origin of North American Late Cretaceous dinosaur fauna
Animantarx
Tyrannosaurus
TorosaurusAlamosaurus
Ornithomimus
ornithomimid
Edmontonia
Hagryphus
Parasaurolophus
Cedarpelta
Nedcolbertia
Ferron Sandstone - Smoky Hollow Member
DAKOTA FORMATION
Blue Gate Member MANCOS SHALE
TROPIC SHALE. - Tununk Member MANCOS SHALE
NORTH HORN FORMATION
KAIPAROWITS FORMATION
WAHWEAP FORMATION - MASUK FORMATION
NothronychusZuniceratops advanced
hadrosauromorphs
new tyrannosaurids
new tyrannosaurid
ankylosaurid teeth
hadrosaurine newpachycephalosaurs
new chasmosaurines
CURTIS - SUMMERVILLE FORMATION
ENTRADA SANDSTONE
PERMIAN
CARMEL FORMATIONPAGE SANDSTONE
NAVAJO SANDSTONE
KAYENTA FORMATION
MOENAVE FORMATION - WINGATE SANDSTONE
CHINLE FORMATION / GROUP
MOENKOPI FORMATION
Coelophysis
Megapnosaurus
MegapnosaurusGrallator( tracks)
Dilophosaurus ?
Seitaad Otozoum
&( tracks)
Megalosaur (Megalosaurophus tracks)
Sauropod (Parabrontosaurophus tracks)
Dilophosaurus (Eubrontes tracks)
tiny ornithopod
Brachiosaurus
Allosaurus
Apatosaurus
Camarasaurus
Camptosaurus
Stegosaurus
Ceratosaurus
new carnosaurid
new camarasaurid
Dryosaurus
Gryposaurus
Diabloceratops
Haplocanthosaurus
Torvosaurus
Diplodocus
Marshosaurus &Stokesosaurus
Falcarius
new large polacanthineankylosaur new
iguanodont
Gra
nd S
rair
case
- E
scal
ante
Nat
iona
l M
onum
ent
San
Raf
ael
Swel
l -
Arc
hes
Nat
iona
l P
ark
Din
osau
r N
atio
nal
Mon
umen
tC
leve
land
Llo
yd Q
uarr
y
Sout
hern
Uta
h -
St.
Geo
rge
Din
osau
r D
isco
very
Sit
e
long-horned centrosaurines
DINOSAUREXTINCTION
ORIG
IN O
FFL
OWER
S
FIRSTDINOSAUR
Upper STRAIGHT CLIFFS FORMATION
Maastrichtian
SantonianConiacian
Turonian
Cenomanian
Barremian
Neocomian
Tithonian
Kimmeridgian
Oxfordian
Callovian
BathonianBajocian
Aalenian
Toarcian
Pliensbachian
Sinemurian
HettangianRhaetian
Norian
Carnian
Ladnian
Anisian
OlenekianInduan
UTAH’S DINOSAUR RECORD
UTAH’S MESOZOICROCK RECORD
GEOLOGIC TIME SCALE
major time gaps in stratigraphic record in white
